long interconnects [RE-wrenches]

[Drake Chamberlin]

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Hello Wrenches,

We have an array configuration that would favor having some long 
interconnects between modules in a string.  I'm not sure how to 
figure the voltage for the wire sizing.  As the positive terminal of 
one is connected to the negative terminal of the next, the wire 
essentially constitutes one terminal, which in theory would have a 
nearly uniform voltage (minus IR losses).

What is the magnitude of the EMF which produces current in the 
interconnect?  Do we look at the potential of the entire array, 
taking into account the resistance of the load (the inverter in this 
case)?  What resistance does an array see through an inverter?

Thank you,

Drake 


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